| When working on the fuel system note the following warnings: |
WARNING | Risk of injury - fuel system operates under pressure. |
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| Wrap a clean cloth around the connection before opening the fuel system. Then release pressure by carefully loosening the connection. |
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| Wear protective gloves. |
| The fuel can become extremely hot. This can cause injuries. |
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| In extreme cases the fuel lines and the fuel can reach a temperature of 100 °C on vehicles with unit injector engine. Allow the fuel to cool down before disconnecting the lines - danger of scalding. |
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| Wear protective gloves. |
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| Observe the following points to prevent personal injuries and damage to the injection and glow plug system: |
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| Always switch off the ignition before connecting or disconnecting tester cables or electrical wiring for the injection or glow plug system. |
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| Always switch off ignition before washing engine. |
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| Faults are stored in engine control unit if electrical connectors have been unplugged: |
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| Connect vehicle diagnostic, testing and information system -VAS 5051B-. |
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| Start “Vehicle self-diagnosis” mode. |
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| Interrogate fault memory. |
Caution | To prevent damage to the electronic components when disconnecting the battery: |
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| Observe notes on procedure for disconnecting the battery. |
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| Always switch off the ignition before disconnecting the battery. |
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| When working on the cooling system note the following warnings: |
WARNING | Hot steam/hot coolant can escape - risk of scalding. |
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| The cooling system is under pressure when the engine is hot. |
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| To allow pressure to dissipate, cover filler cap on coolant expansion tank with cloth and open carefully. |
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| Note the following if testers and measuring instruments have to be used during a road test: |
WARNING | Accidents can be caused if the driver is distracted by test equipment while road-testing, or if test equipment is not properly secured. |
| Injuries can also be caused if the passenger's airbag is triggered in a collision. |
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| The use of test equipment while driving causes distraction. |
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| There is an increased risk of injury if test equipment is not secured. |
| Test equipment must always be secured on the rear seat with a strap and operated from the rear seat by a second person. |
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